A downloader for CDA.pl.
$ npm i -g cdad
$ cdad https://www.cda.pl/video/<id>
$ cdad https://www.cda.pl/<user>/folder/<id>
or, as a library
var cda = require('cdad');
// see cli.js for usage example- Only downloads the first page of a folder, because I haven't needed to download a bigger folder yet.
If it doesn't work with a link for you, create an issue, and I'll look into it when I have some spare time.